fix(rest): Fix rest convert error

[oxsean]

What is the purpose of the change

Fix initialization failure when jaxrs jar is missing due to use of convert.

Brief changelog

Verifying this change

Checklist

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[sonarcloud]

Quality Gate passed

Issues
0 New issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 38.64%. Comparing base (46af145) to head (e4d86fb).
Report is 67 commits behind head on 3.3.

Additional details and impacted files

@@            Coverage Diff             @@
##              3.3   #13783      +/-   ##
==========================================
- Coverage   41.41%   38.64%   -2.77%     
==========================================
  Files        1750     1894     +144     
  Lines       73370    79244    +5874     
  Branches    10371    11529    +1158     
==========================================
+ Hits        30388    30627     +239     
- Misses      38691    44313    +5622     
- Partials     4291     4304      +13     

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